Concrete-mold.



2 SHEETS-SHEET 1 Patented Apr. 2o, 1915.

L. GlGUERE.

CONCRETE MOLD.

APPLICATION FILED DEc.1. 1913.

THE NORRIS PETERS CO.. PHGTO-LITHO.. WASHINGION. D. C.

L. Gmumi.

CONCRETE MOLD.

APPucATloN F1150 DEc. 1, 1913.

Patented A111120, 1915.

2 SHEETS-SHEET 2.

THE MORRIS PETERS Co.. PHOTO-LITHO., WASHINGTON. D4 C.

' shape when LIIVIOG'rE GIGURE, OF IvIGNTR-EAL, QUEBEC,

CANADA.

CONCRETE-MOLD.

Application filed December 1, 1913.

T0 all whom t may concern.'

Be it known that I, LiMocn GIGURE, a subject of the King of Great Britain, and resident of the city of Montreal, in the Province of Quebec, in the Dominion of Canada, have invented certain new and useful Improvements in Concrete-Molds; and I do hereby declare that the following is a full, clear, and exact description of the same.

The invention relates to improvements in concrete molds and one of the objects is to improve the construction of the mold box in such a manner that the block or the like pressed therein will be more uniformly drained of its water and thus retain its removed from the machine and dried.

.A further object of the invention is to simplify the mechanism for squeezing and forcing out the block.

The invention will be fully described hereinafter with the aid of the accompanying sheets of drawing in which Figure 1 is a side elevation ofthe ma* chine. Fig. 2 is a transverse vertical sec* tion. Fig. 3 is a plan view of the mold box. Fig. 4 is a perspective view of two of the sections forming the wall of the mold box and Fig. 5 is an end view of the block squeezing member.

Like numerals of reference indicate corresponding parts in each igure.

Referring to the drawings, 1 designates the base of the machine formed of the two pairs of legs 2-2 and 3`3, each pair being coupled by a cross bar 4 in which the ends of the operating shaft 5 are journaled.

6 is the skeleton frame of the mold box, rigidly secured to the base l and open at top and bottom.

In the manufacture of pressed concrete blocks in a box with solid side walls I have found that in blocks exceeding a certain height the water is only squeezed from the block adjacent to the ends which receive the pressure, a certain amount of water remaining in the block intermediate of its height and causing more or less distortion of the block when drying out, therefore in the present invention I construct the vertical walls of the mold of fairly narrow sections so that the water in the block may be squeezed out uniformly through the joints between said sections.

7 are the sections forming the vertical Specification of Letters Patent.

Patented Apr., 2t), 1915., serial no. 804,007.

side walls of the mold, said sections being of elongated narrow construction with flat inner surfaces 8 and narrower channeled outer surfaces 9, thus providing a space 10 between each pair of sections behind the =joint therebetween. The sections 7 are po sitioned side by side within the skeleton frame 6 and against the walls thereof and they are fitted together so that there is only a very slight space between each pair, of course not enough space for the concrete to pass into.

The sections 7 extend practically the full height of the mold box and, being all of the same height they are secured in position by rectangular plates 11, preferably one at each end of the sections, the upper of said plates having a number of long bolts 12 depending from its under side, each of said bolts extending right through a section 7 in the channel of the rear surface thereof, said bolts at their lower ends extending through the other plate 11 and being secured therein by clamping nuts 13. When the nuts 13 are tightened up, the sections 7 are held tightly together to form the mold which is then placed within the skeleton frame 6.

It will thus be seen that there are many very narrow vertical spaces all around the mold box through which the water in the body of the block may pass.

14 is a cover for the mold box which may be of any desired construction and operation. .As here shown, the cover 14 is hinged at 15 to one side of the skeleton frame and, outside its hinge, is provided with a weight 16 operating to normally keep the lid open. 17 are a pair of handles pivoted at their lower ends to the ends of the shaft 5 respectively and each having a stop 17a to-V ward its upper end adapted to bear on the top surface of the cover 14.

17b are locking levers for the handles 17a, said levers being loosely pivoted to the shaft 5 and each having an eccentric collar which lits within the lower end of the handle 17, so that when the levers swing forward, a longitudinal movement is imparted to the handles 17 which has the effect of locking the stops 17a against the cover 14 and thus locking the cover in the closed position. W hen it is desired to open the cover, the handles 17b are moved to sition which lifts the stops 17a from the cover 14 and permits the handles 17 to the unlocking poa be swung rearwardly, thus leaving the cover free to open itself by the weight 16. The handles 17a are pivoted to the sha-ft 5 and locked by the levers 17b exactly in the same manner as the cover locking handles shown and described in my former application for Letters-Patent of the United States Serial No. 779,009, filed July 14th, 1913, and the locking means per se form no part of the present invention.

18is a pressure plate fitting nicely within the boundary walls of the mold at the open lower end and operating to squeeze the block between itself and the cover 14. The water squeezed out of the block falls on to the inclined pan 19 secured to the base beneath the mold box and runs from there into a receiver `20, thus protecting the operating f shaft 5.

21 is a rod extending across the base of the machine and extending at each end into a vertical guide slot 22 in the base 1.

23 are cross heads rigidly secured at a distance apart to the rod 21 and serving to couple the pressure plate 18 to the rod 21 through the medium of the vertical lifting arms 24.

A25--25 are a pair of sprocket wheels loosely encircling the shaft 5 one toward each( end thereof, the inner side face of each of said sprocket wheels being formed with ratchet clutch teeth 26 adapted to be engaged by similarly shaped teeth on the clutch collars 27 which are slidably and rotatably mounted on the shaft 5 through the well known medium of key ways. It willr be understood however that this clutch engagement will only take place when the y collars 27 are rotated in one direction.

The clutch collars 27 are normally retained in contact with the teeth 26 by a coiled spring 28 encircling the shaft 5 between said collars and pressing them both outwardly.

29 are sprocket chains each engaging one of the sprockets25 and caught at one end to the shaft 21 and at the other end to a brace 30 extending across the base 1 toward its lower end. If desirable, a weight 31 may be'hung on each chain 29 so as to nearly counter balance the weight of the pressure plate 18, arms 24, rod 21 and cross heads 23.

It will thus be seen that when the shaft v 5 is turned in one direction, the collars 27 turning withthe shaft will engage the sprocket wheels 25 and rotate them also with the shaft thus lifting the arms 24 and forcingvup the'pressure plate 18, said arms being guided in their up and down movement by the ends of the rod 21 in the slots 22. This movement however is only utilized when forcing the finished block out of the mold. The turning of the shaft 5 is accomplished through the medium of the gear 32 rigidly mounted on one end of the shaft 5 and engaged by a pinion 33 to which is connected a handle 34.

35-35 are a pair of collars eccentrically and rigidly mounted on the shaft 5 one adjacent to each sprocket 25, said collars being each encircled by a strap 3G from which rigidly depends a loop 37, said loops passing under the rod 21.

lt has been previously explained how the turning of the shaft 5 in one direction raises the lifting arms 24 and during this rotation, the collar 35 rotates and idly lifts the strap 36, but when the block is to be compressed within the mold, the cover 14 is closed down and the shaft 5 is rotated in the opposite direction by a reverse movement of the handle 34, this having the effect of raising the loops 37 the short and limited distance permitted by the collars 35 and thus pulling up the rod 21 which transfers its movement to the pressure plate 18 which in turn effects the squeezing of the block within the mold. It must be noted however that in this reverse movement of the shaft no other lifting movement is imparted, because the clutch halves 27 will slip over the teeth of and consequently will not turn the sprockets 35.

It will be obvious that the mold box herein described may have a core or cores ineluded therein and the same may be accomplished in a well known manner. Further, l could make the mold box of any smaller size than that herein described and shown in the drawings. For instance, with some of the same sections, a smaller box could be 100 made and suitably supported within the skeleton frame, and of course the pressure plate would require to be correspondingly changed.

What I claim is 1. A concrete mold open at its top and bottom, a removable cover for said open top and a pressure plate in said open bottom, each of the side walls of said box being formed of a plurality of sections suitably 11o secured together to provide narrow draining slots therebetween and means for operating said pressure plate.

2. A concrete mold open at its top and bottom, a removable cover for said open top 115 and apressure plate in said open bottom, each of the side walls of said mold being formed of a plurality of narrow sections extending substantially from top to bottom of the box, means for securing said sec- 120 tions in the assembled position and means for operating said pressure plate.

3. In a concrete mold, a mold box frame open at top and bottom, an inner wall forming the side of the mold, each of said sides 125 being composed of a plurality of sections, means for securing said sections in the assembled position within said frame, a removable cover for said mold, a pressure plate fitting the open lower end of the mold 130 within said inner walls and means for operating said pressure plate.

4. In a concrete mold, a mold boX frame open at the top and bottom, an inner wall forming the side of the mold, each of said sides comprising a plurality of assembled sections, each of said sections comprising a narrow block with a flat inner face and a hole therethrough from end to end, a plurality of bolts extending through the holes in said sections and secured at their lower end, thus securing said sections in their assembled position, a removable cover for said mold, a pressure plate fitting the open lower end of said mold within the inner wall and 15 means for operating said pressure plate.

Signed at Montreal, Canada, this fifth day of November, 1913.

LIMOGE GIGUERE. Witnesses:

M. PATENAUDE, C. PATENAUDE.

C'opies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

